Bipolar radiofrequency ablation of tibialchondroblastomas: A report of three cases

Figure 3 Chondroblastoma of the right tibia in a 55-year-old female. A: Frontal radiograph of the right knee showing an ill-defined lytic lesion in the proximal epiphysis of the right tibia (arrow); B: Unenhanced axial computed tomography (CT) image shows to a better advantage the geographic lytic lesion with sclerotic margins. No matrix mineralization is seen; C, D: Axial and coronal short-tau inversion-recovery magnetic resonance image images showing that the lesion is homogeneously hyperintense and reaching upto the subarticular region causing thinning of the overlying subchondral bone (arrow); E: Follow-up CT image obtained after the second radiofrequency session showing increased peripheral sclerosis of the lesion (arrow) with no significant change in lesion size.